ISHS Acta Horticulturae 785: International Symposium on Grape Production and Processing
STUDIES ON THE INTEGRATED NUTRIENT MANAGEMENT IN THOMPSON SEEDLESS GRAPES |
| Authors: | D.R. Patil, G.S. Sulikeri, H.B. Patil, R.A. Balikai |
| Keywords: | Thompson Seedless, INM, vermicompost, TSS: acid ratio |
| Abstract:
Field experiment was conducted with a view to elucidate the effect of integrated nutrient management on the productivity and quality of Thompson Seedless grapes using Randomized Block Design with seven treatments replicated thrice at the Regional Agricultural Research Station, Bijapur under telephone system for two years from 1998–2000. The treatments consisted of T1- Recommended dose of fertilizers, i.e., 300:500:1000 kg NPK/ha + Recommended dose of farmyard manure, i.e., 35 t/ha (RDF+RDFYM); T2- Recommended dose of fertilizers alone (RDF); T3 Recommended dose of farmyard manure alone (RDFYM); T4- Recommended dose of fertilizers wherein 50 percent nitrogen supplied through farmyard manure (RDFF); T5- Recommended dose of fertilizers wherein 50 percent nitrogen supplied through vermicompost (RDFV); T6- Recommended dose of fertilizers wherein 50 percent nitrogen supplied through green manure (Glyricidia) (RDFG) and T7- Recommended dose of fertilizers wherein 50 percent nitrogen supplied through poultry manure (RDFP). Number of bunches per vine was significantly higher in RDFV (45.58) as compared to other treatments, while 40.87, 40.44, 40.07 and 38.37 bunches per vine were found in RDF + RDFYM, RDFG, RDFF and RDFP, respectively, which were on par with each other. Bunch weight was significantly higher in RDF + RDFYM (255.84 g) as compared to other treatments. This was followed by RDFV (235.00 g), RDF (235.00 g), RDFG (228.34 g) and RDFF (225.84 g), which were on par with each other. Berry diameter was more in RDF + RDFYM (13.77 mm), followed by RDFG (13.50 mm), RDFV (13.40 mm), RDFF (13.27 mm), RDFP (13.24 mm) and RDF (13.24 mm) which were on par with each other. Highest berry weight (122.34 g) was recorded in RDFV followed by RDF + RDFYM (121.84 g) and RDFG (117.50 g) and these were on par with each other, but, significantly differed with other treatments. Bunch yield per vine in Thompson Seedless grapes was significantly increased by various INM treatments. Bunch yield was highest in RDFV (10.26 kg) followed by RDF + RDFYM (9.56 kg) and RDFG (8.76 kg), which did not differ significantly with each other, while these were superior over other treatments. RDFV recorded significantly higher yield per hectare (35.61t/ha) as compared to other treatments. The next best treatment was RDF + RDFYM (33.17 t/ha). The pooled data on total soluble solids to acid ratio indicated the superiority of RDFV (40.58) followed by RDFG (40.21). Total soluble solids to acid ratio in other treatments did not differ significantly with each other. | |
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